wangyum commented on code in PR #39512:
URL: https://github.com/apache/spark/pull/39512#discussion_r1067605737
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sql/core/src/main/scala/org/apache/spark/sql/execution/exchange/EnsureRequirements.scala:
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@@ -76,13 +76,17 @@ case class EnsureRequirements(
case _ => false
}.map(_._2)
- // Special case: if all sides of the join are single partition
- val allSinglePartition =
- childrenIndexes.forall(children(_).outputPartitioning == SinglePartition)
+ // Special case: if all sides of the join are single partition and it's
physical size less than
+ // or equal advisoryPartitionSizeInBytes.
+ val preferSinglePartition = childrenIndexes.forall { i =>
+ children(i).outputPartitioning == SinglePartition &&
+ children(i).logicalLink
+ .forall(_.stats.sizeInBytes <=
conf.getConf(SQLConf.ADVISORY_PARTITION_SIZE_IN_BYTES))
Review Comment:
How about `SQLConf.FILES_MAX_PARTITION_BYTES`?
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